taro-ui Button $scope 未定义

问题描述 taro next 版本提交表单时报错 $scope 未定义 https://github.com/NervJS/taro-ui/blob/b702e9ab3df47bcb78253ec81c3112e94633235c/src/components/button/index.tsx#L65-L72

复现步骤

点击提交按钮报错

<AtForm
  onSubmit={console.log}
>
  <AtInput
    name="phone"
    title="手机号码"
    type="phone"
    placeholder="手机号码"
    value={'132'}
  />
  <AtButton
    type="primary"
    formType="submit"
  >提交</AtButton>
</AtForm>

期望行为 不报错

报错信息

Cannot read property 'triggerEvent' of undefined; [Component] Event Handler Error @ pages/bindPhoneNumber/bindPhoneNumber#bound eventHandler
TypeError: Cannot read property 'triggerEvent' of undefined
    at AtButton.onSumit (http://127.0.0.1:44237/appservice/vendors.js:5038:21)
    at TaroElement.dispatchEvent (http://127.0.0.1:44237/appservice/taro.js:3576:29)
    at Ue.eventHandler [as eh] (http://127.0.0.1:44237/appservice/taro.js:2215:10)
    at Object.r.safeCallback (http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1697411)
    at http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1828274
    at s (http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1837621)
    at http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1828199
    at r (http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1774436)
    at http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:1774558
    at http://127.0.0.1:44237/appservice/__dev__/WAService.js:2:833887

系统信息

👽 Taro v3.0.0-rc.2


  Taro CLI 3.0.0-rc.2 environment info:
    System:
      OS: macOS 10.15.5
      Shell: 5.7.1 - /bin/zsh
    Binaries:
      Node: 14.2.0 - /usr/local/bin/node
      Yarn: 1.17.3 - /usr/local/bin/yarn
      npm: 6.14.5 - /usr/local/bin/npm
    npmPackages:
      @tarojs/cli: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/components: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/mini-runner: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/react: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/runtime: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/taro: 3.0.0-rc.2 => 3.0.0-rc.2 
      @tarojs/webpack-runner: 3.0.0-rc.2 => 3.0.0-rc.2 
      babel-preset-taro: 3.0.0-rc.2 => 3.0.0-rc.2 
      eslint-config-taro: 3.0.0-rc.2 => 3.0.0-rc.2 
      react: 16.13.1 => 16.13.1

补充信息 无